The team kept up their reputation throughout the remainder of 2015, winning a large number of the Rocket Royale tournaments and came into the RLC Pro League as favourites. Though their start to league play wasn't as dominant as it probably should have been, come the playoffs FlipSid3 Tactics were on very good form and looked sure to win the whole thing. Untethered and Kings of Urban were both taken out, though with closer matches than F3 probably would have liked. Surprisingly, F3 ended up losing the final to Crown and Jewels 4-5, thereby making the RLC Pro League the first big tournament F3 had lost. Rumours emerged just hours after the final of roster changes, yet in the end, the team stayed together.

Following the RLCS, M1k3Rules took his break from competitive[1], as he had announced before RLCS started. In a relatively quick move, F3 managed to sign Marius "gReazy" Ranheim, formerly of Northern Gaming, as a replacement for M1k3Rules.

The addition of gReazy looked to have paid off as F3 had a strong start to Season 2 by finishing second only to Northern Gaming in European League Play and securing automatic qualification to RLCS Season 2 Finals. The Green Machine started their European Regional Playoffs run with a bang by beating Precision Z 4-1 before sweeping European League Play winners Northern Gaming 4-0 in the European Finals, securing a #1 seed going into the LAN Finals in Amsterdam. In Amsterdam, the European champions started strong yet again by beating North American side Take 3 3-1 in the winner's quarterfinals. However, they were soon knocked down to the lower bracket after losing to their fellow Europeans Mock-it eSports 3-1. In the loser's bracket, Flipsid3 beat North American champions NRG eSports 3-1 before beating Take 3 for the second time in the event, this time sweeping them 3-0. In the loser's finals, F3, who were gathering momentum looking to make yet another lower bracket run, faced off against Northern Gaming for a spot in the Grand Finals. Flipsid3 were dominant and brushed the European powerhouse aside in a 4-1 victory to advance to face Mock-it eSports for the RLCS Season 2 title. With momentum and confidence at an all-time high, the European champions looked to seal the deal in the finals this season. They quickly reset the bracket after securing a 4-1 victory against their European rivals. They closed out Season 2 in dominant fashion with yet another 4-1 win in the second series to secure the RLCS Season 2 title.

On a high from their World Championship victory in Season 2, Flipsid3 Tactics went into Season 3 as strong favourites to defend their title. The team finished League Play in 3rd place, just barely missing out on automatic qualification to the World Championships for the first time. However, the team had a strong showing in the European Regional Playoffs, beating Resonant Esports 4-3, The Leftovers 4-2, before ultimately falling to Mock-it eSports 4-2 in the finals. The team looked to repeat their dominant performance from the previous World Championships and defend their title. However, the team struggled to reach their previous heights when they fell to North American titans NRG Esports in the winner's semifinals before ultimately being eliminated by The Leftovers in loser's round 3. After disappointing 5th-6th place finish, gReazy left the team.[2]. David "miztik" Lawrie turned out to be his replacement[3], after having won DreamHack Summer with F3

The new roster consisting of Markydooda, Kuxir97 and miztik looked to build on their strong performance at Dreamhack Summer and return to their former glory in RLCS Season 4. However, the team struggled throughout the season finishing 6th in League Play and losing in the first round of the regional playoffs 4-1 to Gale Force eSports. On January 11th 2018, Markydooda left Flipsid3 Tactics[4], meaning that one of the longest standing duos in the game (Markydooda and Kuxir97) had come to an end after 882 days.

After losing Markydooda, Kuxir97 and Miztik looked for a 3rd player desperately before the next RLCS. They found Yukeo in a Gfinity tournament and Miztik said it was like a 1v3 for him (Yukeo). He was consistently putting pressure on them throughout the whole series. DreamHack Open Leipzig 2018 rolled around the corner and Miztik was unable to attend because of an illness so they brought on Jessie and they took down the second best team in the world at that time; compLexity Gaming (formerly Method at the time) .They finished in 5-8th place overall. Jessie was hired as substitute player after this because of how well he had performed during DreamHack. After that FlipSid3 Tactics looked very confident going into RLCS Season 5, only to start with a very poor performance. They were able to pull it back in week 4; shocking everyone by sweeping Gale Force eSports (now Team Dignitas) and then taking down Renault Vitality in a 3-2 matchup. At the European Regional Playoffs FlipSid3 Tactics fell to Team EnVyUs 4-2, ultimately failing to make the RLCS LAN finals for the second season in a row.

FlipSid3 Tactics had really taken that loss to their hearts, but not long after the RLCS finished FlipSid3 Tactics would make an astonishing comeback in minor/major tournaments. They took down many great teams and are currently the only team to beat Team Dignitas consistently.

FlipSid3 Tactics kept the same roster from Season 5 going into Season 6. The team finished with a 5-2 record in League Play, finishing second to only Team Dignitas, securing them a spot at the RLCS Season 6 finals. This was the first time FlipSid3 (and Miztik) had made the finals since RLCS Season 3. This was also the first time Yukeo had qualified for the finals. However, FlipSid3 would fall to We Dem Girlz in the first round of the European Regional Playoffs, the same team that had bested them in the Season 5 playoffs. However, they would finish the playoffs with a 4-1 win over PSG Esports, securing them the EU third seed heading into finals. At Vegas, the "Green Machine" took down North American fan favourites G2 Esports in a tight five game series before getting knocked down to the lower bracket by defending champions Team Dignitas. In the lower bracket, they would face off against another North American fan favourite, Cloud9. Cloud9 jumped ahead to a 2-0 series lead before FlipSid3 were able to fight back and force a game five. However, FlipSid3 would ultimately fall in the fifth, thus exiting the tournament with a respectable 5th-6th place finish.